Fan and fan assembly

Abstract

A fan includes an impeller, a motor, a circuit board, a fan frame and a connecting member. The motor is used to drive the impeller to rotate. The circuit board is electrically connected to the motor. The impeller and the motor are accommodated in the fan frame. The connecting member is disposed at one side of the fan frame. The circuit board is disposed between the connecting member and the fan frame. Also, a fan assembly including such two fans is also disclosed.

1 . A fan, comprising:
 an impeller and a motor for driving the impeller to rotate;   a circuit board electrically connected to the motor;   a fan frame for accommodating the impeller and the motor; and   a connecting member disposed at one side of the fan frame, wherein the circuit board is disposed between the connecting member and the fan frame.   
     
     
         2 . The fan according to  claim 1 , wherein the connecting member is a cover for accommodating the circuit board. 
     
     
         3 . The fan according to  claim 1 , wherein the connecting member and the fan frame are integrally formed as a single unit, or the connecting member is detachably disposed on the fan frame by way of sliding, engaging or hooking. 
     
     
         4 . The fan according to  claim 1 , wherein the connecting member comprises a bottom and a plurality of sidewalls connected to the bottom, and the bottom comprises at least one heat dissipating hole for dissipating heat from the fan. 
     
     
         5 . The fan according to  claim 4 , wherein the fan frame comprises at least one sliding rail disposed at a peripheral corner of the fan frame, and the sidewalls of the connecting member are correspondingly disposed on the sliding rail. 
     
     
         6 . The fan according to  claim 1 , wherein the connecting member has an opening and a slot so that the circuit board is disposed in the connecting member and is connected with the slot after sliding through the opening. 
     
     
         7 . The fan according to  claim 1 , further comprising at least one fastener disposed at the side of the fan frame or on the connecting member, and the fastener comprises a protrusion. 
     
     
         8 . The fan according to  claim 7 , wherein the circuit board has a plurality of notches disposed on a periphery of the circuit board, and each fastener is correspondingly disposed on the notch so that the circuit board is disposed at outside of the fan frame and connected to the fan frame via the fastener engaging with the notch. 
     
     
         9 . The fan according to  claim 1 , wherein the circuit board is electrically connected to the motor through a wire or a cable. 
     
     
         10 . A fan assembly, comprising:
 at least two fans connected together, each of the fans has a fan frame;   at least one circuit board electrically connected to the fans; and   at least one connecting member disposed at one side of each fan frame, wherein the circuit board is disposed between the connecting member and the fan frames.   
     
     
         11 . The fan assembly according to  claim 10 , wherein the connecting member is a cover for accommodating the circuit board. 
     
     
         12 . The fan assembly according to  claim 10 , wherein the connecting member and the fan frame are integrally formed as a single unit, or the connecting member is detachably disposed on the fan frame by way of sliding, engaging or hooking. 
     
     
         13 . The fan assembly according to  claim 10 , wherein the connecting member comprises a bottom and a plurality of sidewalls connected to the bottom, and the bottom comprises at least one heat dissipating hole for dissipating heat from the fan. 
     
     
         14 . The fan assembly according to  claim 10 , wherein the circuit board is electrically connected to a stator of the motor through a wire or a cable, and the fans are connected in series. 
     
     
         15 . The fan assembly according to  claim 10 , wherein the circuit board is a common circuit board for the two fans, and each fan has one single connecting member so that when said two fan frames of the two fans are connected together, the common circuit board is disposed in a closed space formed after said two connecting members are combined together.